Dredge bucket



Dec. 8, 1936.

W. H. STI'RES DREDGE. BUCKET Filed Dec. 18, 1954 I WM art "WM Patented Dec. 8, 1936 UNITED STATES PATENT OFFiCE Application December 18, 1934, Serial No. 758,118

mentalities are locked externally of the bucket;

10 The nature, characteristic features and scope of the invention more readily will be understood from the following detailed description taken in connection with the accompanying drawing, forming a part hereof, wherein:-

'15 Figure 1 is a central vertical sectional view of a dredge bucket-and lip assembly embodying my invention.

Fig. 2 is a section on line 22 of Fig. 1. Fig. 3 is a detail of the front lock, and 20 Fig. 4 is a section on line 4-4 of Fig. 1.

According to the invention, the dredgebucket 5 is provided on its rim with alip seat 6 and. externally and below the same with lip bearings I, the number of which may vary, although I 5 find three to be sufiicient, one on the front of the bucket, the others either side thereof. Also externally of the bucket and nearer the back thereof are cored areas 8 in part contributed by a bolstered or substantially reinforced angularly di- 30 rectedpverhang or upper wall 9.

The lip H) has a medially shouldered portion H fitted to the rim seat'and a continuous skirt or apron l2 whose thrust is taken by the lip bearings i so that when the lip is seated its skirt is lapped by the members i.

The ends l3 of the lip are directed downwardly and rearwardly and are of substantially V-form and are so related to the cored pockets 8 that when the lip is in upraised position its substantially pointed ends may be inserted in the cored pockets and fulcrumed on the bottoms thereof to swing the lip to its seat whereupon the ends are interlocked with the pockets. v

It is desirable to employ a quick-acting interlook at the front of the bucket and externally 5 thereof and such interlock may embody a rib ll on the middle lip bearing and a cooperating bifurcated rib IS on the lip, said ribs having registered apertures to accommodate a wedge fastening l6.

Having described the invention, what is claimed as new is:-

1. A dredge bucket and lip assembly of the rivetless type comprising, in combination, a bucket having external abutments and receptacles for cooperation with the lip, a swingable lip having a skirt to engage the abutments and elbow-like terminals to engage the receptacles, said receptacles having bottoms lying in a substantially'horizontal plane to support the extremities of the terminals and permit them to move back into locking engagement with the receptacle walls when the lip is swung downwardly to operative position.

2. A dredge bucket and lip assembly of the rivetless type comprising, in combinatiom a bucket having a rim seat and external abutments and receptacles belowthe same, a swingable lip having an ofiset shouldered portion to engage the rim seat, a skirt to engage the abutments,

and elbow-like terminals with relatively sharp V ends, said receptacles having substantially horizontally directed 'abutments which support the V ends and permit them to move back into locking engagement with the receptacle walls when the lip is swung downwardly to operative position, and auxiliary means for holding the lip to its seat.

H. STIRES. 

